condition mean min max ZT0-3 10.7 10.7 10.7 ZT4-7 7.727035000000001 7.727035000000001 7.727035000000001 ZT8-11 9.87045 9.87045 9.87045 ZT12-15 10.6921 10.6921 10.6921 ZT16-19 13.305299999999999 13.305299999999999 13.305299999999999 ZT20-23 11.26165 11.26165 11.26165